The Document.write() method writes a string of text to a document stream opened by

Note: as document.write writes to the document stream, calling document.write on a closed (loaded) document automatically calls, which will clear the document.




A string containing the text to be written to the document.



  <title>write example</title>

    function newContent() {;
      document.write("<h1>Out with the old - in with the new!</h1>");

<body onload="newContent();">
  <p>Some original document content.</p>



Writing to a document that has already loaded without calling will automatically call Once you have finished writing, it is recommended to call document.close() to tell the browser to finish loading the page. The text you write is parsed into the document's structure model. In the example above, the h1 element becomes a node in the document.

If the document.write() call is embedded within an inlined HTML <script> tag, then it will not call For example:

  document.write("<h1>Main title</h1>") 
Note: document.write and document.writeln do not work in XHTML documents (you'll get a "Operation is not supported" [NS_ERROR_DOM_NOT_SUPPORTED_ERR] error in the error console). This happens when opening a local file with the .xhtml file extension or for any document served with an application/xhtml+xml MIME type. More information is available in the W3C XHTML FAQ.
Note: document.write in deferred or asynchronous scripts will be ignored, and you'll get a message like "A call to document.write() from an asynchronously-loaded external script was ignored" in the error console.
Note: In Edge only, calling document.write more than once in an <iframe> causes the error SCRIPT70: Permission denied.
Note: Starting in 55, Chrome will not execute <script> elements injected via document.write() in case of an HTTP cache miss for users on a 2G connection. See here for a list of the conditions that need to be met for this to be true.


Specification Status Comment
HTML Living Standard
The definition of 'document.write(...)' in that specification.
Living Standard
Document Object Model (DOM) Level 2 HTML Specification
The definition of 'document.write(...)' in that specification.

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
writeChrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 4Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0


Full support  
Full support

See also